I'm trying to use Python scripts with Blender. I've been bothered by something i feel to be a bug.
When i use the Blender.NMesh.PutRaw() action with a mesh object that hold vertex color information, only part of the information is transmitted to the object. It looks to be something like a quarter of the faces.

To make my question more precise, i made a very simple script to show the problem with PutRaw and vertex painting.
To use this script, starting from the usual standard new scene of Blender, just add a UVsphere, select it and give it a Material. Then, in the Material window, activate the VCol Paint Button.